/Engine/Source/Runtime/Engine/Public/AnimationRuntime.h
static void ExcludeBonesWithNoParents ( const [TArray](API\Runtime\Core\Containers\TArray)< int32 > & BoneIndices, const [FReferenceSkeleton](API\Runtime\Engine\FReferenceSkeleton) & RefSkeleton, [TArray](API\Runtime\Core\Containers\TArray)< int32 > & FilteredRequiredBones )